WP开发的基础知识小结

（1）C#中string[]数组和list<string>泛型的相互转换

       从string[]转list<string>

          string [] str = { "1" , "2" };

             list< string > list = new list< string>(str);

       从list<string>转string[]

             list< string > list=new list< string>;

             string [] str=list.toarray();

（2）关于wp7中的ApplicationBar的图片一直显示不出来

        解决方法：图片的生成操作改为内容。

（3）通过资源类来绑定资源， 步骤：

  a.在程序 App.xml中添加通用类或属性xml:Generic.xaml

    <!--Application Resources-->

    <Application.Resources>

        <ResourceDictionary>

            <ResourceDictionary.MergedDictionaries>

                <ResourceDictionary Source="Generic.xaml"/>

                <ResourceDictionary Source="Themes/Res.xaml"/>

            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>

    </Application.Resources>

  b. 创建generic.xaml，在其中添加关键属性，该属性对应为程序中的一个类(对象)，如下面的LocalizedStrings:

<?xml version="1.0" ?>

<ResourceDictionary

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:sys="clr-namespace:System;assembly=mscorlib"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:zds="clr-namespace:Calendar.Resources">

    <zds:LocalizedStrings x:Key="LocalizedStrings"/>  

</ResourceDictionary>  

 c.创建字典对应的类LocalizedStrings,其中Appress是资源类：

using System;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

namespace Calendar.Resources

{

    public class LocalizedStrings

    {

        public LocalizedStrings() { }

        private static AppRes localizedResources = new AppRes();

        public AppRes LocalizedResources

        {

            get

            {

                return localizedResources;

            }

        }

    }

}

d.实现控件的属性绑定 (path,source)

                        <zdc:ToolsTemplateTile x:Name="test" Grid.Column="0" Grid.Row="0"

                                               TemplateTitle="{Binding Path=LocalizedResources.MenstrualCyclesTitle, Source={StaticResource LocalizedStrings}}"

                                               Click="OnTempalteTileClick" />

（4）跨工程添加资源的问题：http://forums.silverlight.net/t/186827.aspx

     <!--Application Resources-->

    <Application.Resources>

        <ResourceDictionary>

            <ResourceDictionary.MergedDictionaries>

                <ResourceDictionary Source ="/ZDWorksCommon;component/Themes/Generic.xaml"/>

                <ResourceDictionary Source ="Generic.xaml"/>

                <ResourceDictionary Source ="Themes/Res.xaml"/>              

            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>

    </Application.Resources>

如果加载的路径不正确，vs则会提示

（5）关于计算日期的天数间隔

        一种方法是把日期后面的时分秒置为零：

            a. DateTime t1 = new DateTime(curDate.Year, curDate.Month, curDate.Day);

               DateTime t2 = new DateTime(cmpDate.Year, cmpDate.Month, cmpDate.Day);

               int daysInterval = (t2-t1).Days;

            b. curDate -= curDate.TimeOfDay;

                cmpDate -= cmpDate.TimeOfDay;

                int daysInterval = (curDate-cmpDate).Days;

（6）关于控件样式的等价问题    

 <Style x :Name="ToolsRootGridStyle" TargetType="Grid">

        <Setter Property ="Grid.Background">

            <Setter.Value>

                <ImageBrush ImageSource ="/Images/Common/background.jpg" Stretch="None"/>

            </Setter.Value>

        </Setter>

    </Style>

 <Grid x:Name ="LayoutRoot" Style="{ StaticResource ToolsRootGridStyle}"/>     

等价于：  

<Grid x :Name ="LayoutRoot">

     <Grid.Backgroud>

                < ImageBrush ImageSource ="/Images/Common/background.jpg" Stretch ="None"/>

     </Grid.Backgroud>

</Grid>

（7）自定义Eventhandler的参数

a.定义参数类

using System;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

namespace Calendar.Controls

{

    public class AlmanacSelectionChangedEventArgs : EventArgs

    {

        private AlmanacSelectionChangedEventArgs() { }

        internal AlmanacSelectionChangedEventArgs(AlmanacInfo selectedAlmanac)

        {

            SelectedAlmanac = selectedAlmanac;

        }

        public AlmanacInfo SelectedAlmanac { get; private set ; }

    }

}

b.定义委托事件， 装载参数：

      public event EventHandler<AlmanacSelectionChangedEventArgs> SelectionChanged;

         private void OnDoneButtonClick(object sender, EventArgs args)

        {

            SelectionChanged(sender, new AlmanacSelectionChangedEventArgs (m_SelectedItem));

        }

c.注册事件响应，获取参数：

       AlmanacPickerPage almanacPage = e.Content as AlmanacPickerPage;

        if (null != almanacPage)

        {

             almanacPage.SelectionChanged += OnSelectionChanged;

        }

        private void OnSelectionChanged(object sender, AlmanacSelectionChangedEventArgs e)

        {

            m_AlmanacSelected = e.SelectedAlmanac;

        }

(8) 关于ListPicker样式与数据绑定

   首先是声明绑定数据源：

     <Style x :Key="AlmanacLPStyle" TargetType="tk:ListPicker">

        <Setter Property ="FullModeItemTemplate">

            <Setter.Value>

                <DataTemplate>

                    <StackPanel Orientation ="Horizontal" Width="480" Height="80" Background ="Blue">

                        <TextBlock x :Name="YiBlock" Text="{Binding YiName}" Foreground ="Green" VerticalAlignment="Center"/>

                        <TextBlock x :Name="JiBlock" Text="{Binding JiName}" Foreground ="Brown" VerticalAlignment="Center" />

                    </StackPanel>

                </DataTemplate>

            </Setter.Value>

        </Setter>

    </Style>

接着需要做的是定义一个类：

public classs A

{

    public  string YiName ｛get；set；｝

    public  string JiName｛get；set；｝

}

然后定义一个数据源：

List<A> list = new List<A>();

list.Add(new A() { YiName = "11", JiName= "22" });

list.Add( new A() { YiName = "12" , JiName= "42" });

YiOrJiSelectLP.ItemSource = list;